INDEX build failed for 11.x

[Ports Index build]

INDEX build failed with errors:
Generating INDEX-11 - please wait..--- describe.accessibility ---
--- describe.arabic ---
--- describe.archivers ---
--- describe.astro ---
--- describe.audio ---
--- describe.benchmarks ---
--- describe.biology ---
--- describe.cad ---
--- describe.chinese ---
--- describe.comms ---
--- describe.converters ---
--- describe.databases ---
--- describe.deskutils ---
--- describe.devel ---
--- describe.dns ---
--- describe.editors ---
--- describe.emulators ---
--- describe.finance ---
--- describe.french ---
--- describe.ftp ---
[...]
--- describe.print ---
--- describe.russian ---
--- describe.science ---
--- describe.security ---
--- describe.shells ---
--- describe.sysutils ---
--- describe.textproc ---
--- describe.ukrainian ---
--- describe.vietnamese ---
--- describe.www ---
--- describe.x11 ---
--- describe.x11-clocks ---
--- describe.x11-drivers ---
--- describe.x11-fm ---
--- describe.x11-fonts ---
--- describe.x11-servers ---
--- describe.x11-themes ---
--- describe.x11-toolkits ---
--- describe.x11-wm ---
 Done.
make_index: /home/indexbuild/tindex/ports/x11-toolkits/gtkmm20: no entry for /home/indexbuild/tindex/ports/devel/libsigc++12

Committers on the hook:
 jrm mikael olgeni rene tcberner vanilla yuri 

Most recent SVN update was:
Updating '.':
U    www/youtube_dlc/Makefile
U    www/youtube_dlc/distinfo
U    www/cpp-httplib/Makefile
U    www/cpp-httplib/distinfo
U    MOVED
D    devel/libsigc++12
U    devel/Makefile
U    devel/pecl-swoole/Makefile
U    devel/pecl-swoole/distinfo
D    devel/pecl-swoole/files/patch-thirdparty_hiredis_test.c
U    devel/taskctl/Makefile
U    devel/taskctl/distinfo
U    benchmarks/ali/Makefile
U    benchmarks/ali/distinfo
U    sysutils/doctl/Makefile
U    sysutils/doctl/distinfo
U    textproc/py-pyphen/Makefile
U    textproc/py-pyphen/distinfo
U    science/qbox/Makefile
U    science/qbox/distinfo
U    science/jmol/Makefile
U    science/jmol/distinfo
U    misc/concourse/Makefile
U    misc/concourse/distinfo
U    security/tailscale/Makefile
U    security/tailscale/distinfo
Updated to revision 553768.